DOI: 10.1016/j.watres.2018.08.041
Scopus记录号: 2-s2.0-85053128253
论文题名: Phosphorus distribution and bioavailability dynamics in the mainstream water and surface sediment of the Three Gorges Reservoir between 2003 and 2010
作者: Tang X. ; Wu M. ; Li R.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 321
结束页码: 331
语种: 英语
英文关键词: Algal bloom
; Bioavailability
; Eutrophication
; Three Gorges Reservoir
; Water column
Scopus关键词: Biochemistry
; Eutrophication
; Lakes
; Phosphorus
; River pollution
; Surficial sediments
; Suspended sediments
; Water levels
; Algal blooms
; Bioavailability
; Hydrodynamic conditions
; Particulate phosphorus
; Phosphorus distribution
; Three gorges reservoir
; Water column and surface sediments
; Water columns
; Reservoirs (water)
; algal bloom
; bioavailability
; eutrophication
; field survey
; geoaccumulation
; hydrodynamics
; lacustrine deposit
; phosphorus
; reservoir impoundment
; suspended sediment
; water level
; China
; Three Gorges Reservoir
; algae
英文摘要: A staged impoundment scheme was adopted for the Three Gorges Reservoir (TGR) to increase its maximal water level from 135 to 175 m between 2003 and 2010; however, the variation in phosphorus distribution and its bioavailability in the water column and surface sediment, during this period is still uncertain. Field surveys and historical monitoring data related to water column, surface sediment, total phosphorus (TP) and fractional contents, and water bloom characteristics were used to identify the effects of staged impoundment on phosphorus distribution and water eutrophication in the TGR. It is indicated that retention of particulate phosphorus (PP)-bounded suspended sediment (SS) caused an average of 4.69 %–12.28% decline in water column TP between 2004 and 2010 compared with that measured between 1998 and 2003. Phosphorus did not notably accumulate in the mainstream surface sediment when the impoundment water level increased from 135 to 175 m. The mainstream surface sediment was relatively clean, and the release of sediment bioavailable P (Bio-P) contributed to 0.013% of dissolved phosphorus (DP) concentrations in the water column when impoundment of the TGR was 175 m. An increase in dissolved Bio-P in the water column and weak hydrodynamic conditions stimulated the outburst of water bloom in more tributaries when the impoundment water level increased from 135 to 175 m, and the dominant algae gradually evolved from river-dominated species to lake-dominated species. Therefore, it is necessary to limit the entry of DP from the upstream and tributaries into the TGR and manage TP loads in the TGR as a lake rather than as a river in the future. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112441
Appears in Collections: 气候减缓与适应
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作者单位: Basin Water Environmental Research Department, Changjiang River Scientific Research Institute, Wuhan, 430010, China; Key Lab of Basin Water Resource and Eco-Environmental Science in Hubei Province, Wuhan, 430010, China
Recommended Citation:
Tang X.,Wu M.,Li R.. Phosphorus distribution and bioavailability dynamics in the mainstream water and surface sediment of the Three Gorges Reservoir between 2003 and 2010[J]. Water Research,2018-01-01,145